The Awami National Party (ANP) being key ally in the government coalition was set to receive its share in the Senate as it has demanded eight slots including deputy chairmanship.
It was first time in the history of the country that ANP has 12 members in the Upper House.
The ANP leadership keeping in view strength of its members in Senate and part of the ruling collation has demanded deputy chairmanship, chief whip and chairmanship of six senate committees.
The sources said if the deputy chairman slot goes to Balochistan, ANP member has been selected from the province, therefore, it should be given to it.
The ANP was also desirous to appoint Shahi Sayed, the party provincial president, as chairman of one of the standing committees.